Commit | Line | Data |
---|---|---|
79bb6460 JH |
1 | ImgTec TZ1090 PDC GPIO Controller |
2 | ||
3 | Required properties: | |
4 | - compatible: Compatible property value should be "img,tz1090-pdc-gpio". | |
5 | ||
6 | - reg: Physical base address of the controller and length of memory mapped | |
7 | region. This starts at and cover the SOC_GPIO_CONTROL registers. | |
8 | ||
9 | - gpio-controller: Specifies that the node is a gpio controller. | |
10 | ||
11 | - #gpio-cells: Should be 2. The syntax of the gpio specifier used by client | |
12 | nodes should have the following values. | |
13 | <[phandle of the gpio controller node] | |
14 | [PDC gpio number] | |
15 | [gpio flags]> | |
16 | ||
17 | Values for gpio specifier: | |
18 | - GPIO number: a value in the range 0 to 6. | |
19 | - GPIO flags: bit field of flags, as defined in <dt-bindings/gpio/gpio.h>. | |
20 | Only the following flags are supported: | |
21 | GPIO_ACTIVE_HIGH | |
22 | GPIO_ACTIVE_LOW | |
23 | ||
24 | Optional properties: | |
25 | - gpio-ranges: Mapping to pin controller pins (as described in | |
26 | Documentation/devicetree/bindings/gpio/gpio.txt) | |
27 | ||
28 | - interrupts: Individual syswake interrupts (other GPIOs cannot interrupt) | |
29 | ||
30 | ||
31 | Example: | |
32 | ||
33 | pdc_gpios: gpio-controller@02006500 { | |
34 | gpio-controller; | |
35 | #gpio-cells = <2>; | |
36 | ||
37 | compatible = "img,tz1090-pdc-gpio"; | |
38 | reg = <0x02006500 0x100>; | |
39 | ||
40 | interrupt-parent = <&pdc>; | |
41 | interrupts = <8 IRQ_TYPE_NONE>, /* Syswake 0 */ | |
42 | <9 IRQ_TYPE_NONE>, /* Syswake 1 */ | |
43 | <10 IRQ_TYPE_NONE>; /* Syswake 2 */ | |
44 | gpio-ranges = <&pdc_pinctrl 0 0 7>; | |
45 | }; |